<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>多列</title>
    <style>
        .div1{
            -webkit-column-count: 3;
            -webkit-column-width:30px;
            -webkit-column-gap: 20px;
            height:30px;
            word-wrap: break-word;
            -webkit-column-rule-color: lightblue;
        }
    </style>
</head>
<body>
<p class="div1">256saxxxxxxxxz3csa4f55a4444444444444agaadgdjhbhdfkjdbsjfbdjbjhfdbjghbdjfgaskjfbjasdbjadbfgjhbfdj</p>
</body>
</html>